References
How to cite
Matthew Imms, ‘The Semaphore Tower, Eighteen Gun Battery and Round Tower at Portsmouth; the Gosport Blockhouse 1844 by Joseph Mallord William Turner’, catalogue entry, September 2016, in David Blayney Brown (ed.), J.M.W. Turner: Sketchbooks, Drawings and Watercolours, Tate Research Publication, March 2017, https://www